Originally Posted by
Flyby1206
It is a byproduct of the frequent flier points systems. Legacies are mostly flown by those who fly frequently and/or are interested in collecting points for future travel. Corporate travel accounts are main drivers for this type of thing. Beat the FF programs and you will beat the legacies.
Don’t forget about network size. You just can’t get to a lot of places on the U/LCCs.